Rumours about a sequel to the third xXx movie, which starred Vin Diesel, Ruby Rose, Samuel L Jackson, Toni Collette, Ice Cube and Nina Dobrev, have been in circulation for a while now, which is hardly surprising given the movie's performance at the international box office.

xXx: Return of Xander Cage grossed nearly $350 million worldwide, including $164 million in China, when it hit cinemas earlier this year.

It's not known yet what cast members will be returning for the next film but it's thought Ruby Rose, who starred as Adele Wolff, will be making a comeback, as she previously hinted she would reprise the role in an Instagram comment that was quickly picked up by xXx fans.